oMeds
All comparisons
Comparison · longevity

Metformin vs Berberine

Both activate AMPK and improve glucose control. Metformin has decades of evidence and is prescription. Berberine is over-the-counter with shorter half-life and similar magnitude in head-to-head trials on glycemic markers, but weaker long-term outcome data.

Reviewed by Dr. Laura PurdyMay 29, 2026
Attribute
Metformin
Berberine
Mechanism
AMPK activation, hepatic glucose suppression
AMPK activation, gut microbiome shift
Prescription status
Prescription
Supplement
Glycemic effect
Strong, well-documented
Comparable in short-term trials
GI tolerability
GI upset common (extended-release helps)
GI upset common
Longevity evidence
Strongest of any single agent
Emerging
Choose Metformin

Metformin is the provider-reviewed first-line for glycemic and longevity support when prescription is appropriate.

Choose Berberine

Berberine is appropriate as an OTC option when prescription is declined or unavailable.

Educational. Final pathway selection is provider-reviewed via synchronous video consultation against your biomarkers, history, and goals.

Frequently asked

Can both be combined?

Generally not — overlapping mechanism without additive benefit.

Which has more evidence?

Metformin by a wide margin for long-term outcomes.

Next step

Take the optimization assessment.

The adaptive assessment maps your symptoms, history, and goals to candidate pathways — and routes you into provider review.

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